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2078480 = 24525981
BaseRepresentation
bin111111011011100010000
310220121010202
413323130100
51013002410
6112314332
723444465
oct7733420
93817122
102078480
11119a658
128429a8
1357a091
143c166c
152b0ca5
hex1fb710

2078480 has 20 divisors (see below), whose sum is σ = 4832652. Its totient is φ = 831360.

The previous prime is 2078473. The next prime is 2078497. The reversal of 2078480 is 848702.

It can be written as a sum of positive squares in 2 ways, for example, as 929296 + 1149184 = 964^2 + 1072^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×20784802 = 8640158220800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12911 + ... + 13070.

22078480 is an apocalyptic number.

2078480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2078480 is an abundant number, since it is smaller than the sum of its proper divisors (2754172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2078480 is a wasteful number, since it uses less digits than its factorization.

2078480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25994 (or 25988 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 2078480 is about 1441.6934486915. The cubic root of 2078480 is about 127.6189841482.

The spelling of 2078480 in words is "two million, seventy-eight thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 25981 51962 103924 129905 207848 259810 415696 519620 1039240 2078480